The wording of the article owes more to journalistic hyperbole than anything else, but it includes a link to an interactive 360 degree image of the cathedral interior of quite amazing detail. The screenshot below shows a detail from the dome, but visit the link (about half way down) to view any other part of the cathedral interior in similar detail.

As we will see in this article, this great building site, challenging all of human knowledge at that epoch, was the locomotive provoking a scientific and technological revolution. Raising the great dome drew new horizons, which far beyond the construction of a building sent ripples and shockwaves of philosophical optimism to the great benefit of future generations.